Home / 755,038.90-1,129,605.90-489,318.40

Finding the Fourth Proportional to 755,038.90, 1,129,605.90 and 489,318.40

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Solution

The fourth proportional to 755,038.90, 1,129,605.90 and 489,318.40 is: 732,064.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,038.90 : 1,129,605.90 = 489,318.40 : x
  2. Step 2: Convert to fraction form
    755,038.90/1,129,605.90 = 489,318.40/x
  3. Step 3: Cross multiply
    755,038.90x = 1,129,605.90 × 489,318.40
  4. Step 4: Simplify right side
    755,038.90x = 552,736,951,618.56
  5. Step 5: Solve for x
    x = 552,736,951,618.56/755,038.90
  6. Step 6: Final answer
    x = 732,064.20

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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.