Home / 989,257.80-1,483,595.10-390,019.80

Finding the Fourth Proportional to 989,257.80, 1,483,595.10 and 390,019.80

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Solution

The fourth proportional to 989,257.80, 1,483,595.10 and 390,019.80 is: 584,914.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,257.80 : 1,483,595.10 = 390,019.80 : x
  2. Step 2: Convert to fraction form
    989,257.80/1,483,595.10 = 390,019.80/x
  3. Step 3: Cross multiply
    989,257.80x = 1,483,595.10 × 390,019.80
  4. Step 4: Simplify right side
    989,257.80x = 578,631,464,182.98
  5. Step 5: Solve for x
    x = 578,631,464,182.98/989,257.80
  6. Step 6: Final answer
    x = 584,914.74

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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.