Home / 977,115.40-1,465,673.10-345,947.20

Finding the Fourth Proportional to 977,115.40, 1,465,673.10 and 345,947.20

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Solution

The fourth proportional to 977,115.40, 1,465,673.10 and 345,947.20 is: 518,920.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,115.40 : 1,465,673.10 = 345,947.20 : x
  2. Step 2: Convert to fraction form
    977,115.40/1,465,673.10 = 345,947.20/x
  3. Step 3: Cross multiply
    977,115.40x = 1,465,673.10 × 345,947.20
  4. Step 4: Simplify right side
    977,115.40x = 507,045,505,060.32
  5. Step 5: Solve for x
    x = 507,045,505,060.32/977,115.40
  6. Step 6: Final answer
    x = 518,920.80

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Double scale
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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.