Home / 1,039,420.89-1,559,131.25-391,118.90

Finding the Fourth Proportional to 1,039,420.89, 1,559,131.25 and 391,118.90

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Solution

The fourth proportional to 1,039,420.89, 1,559,131.25 and 391,118.90 is: 586,678.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039,420.89 : 1,559,131.25 = 391,118.90 : x
  2. Step 2: Convert to fraction form
    1,039,420.89/1,559,131.25 = 391,118.90/x
  3. Step 3: Cross multiply
    1,039,420.89x = 1,559,131.25 × 391,118.90
  4. Step 4: Simplify right side
    1,039,420.89x = 609,805,689,704.37
  5. Step 5: Solve for x
    x = 609,805,689,704.37/1,039,420.89
  6. Step 6: Final answer
    x = 586,678.31

Related Problems

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Half scale
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Double scale
Find fourth proportional to 1,039,421.89, 1,559,132.74 and 391,119.90
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.