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Finding the Fourth Proportional to 607,780.10, 912,490.95 and 355,319.30

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Solution

The fourth proportional to 607,780.10, 912,490.95 and 355,319.30 is: 533,458.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,780.10 : 912,490.95 = 355,319.30 : x
  2. Step 2: Convert to fraction form
    607,780.10/912,490.95 = 355,319.30/x
  3. Step 3: Cross multiply
    607,780.10x = 912,490.95 × 355,319.30
  4. Step 4: Simplify right side
    607,780.10x = 324,225,645,610.34
  5. Step 5: Solve for x
    x = 324,225,645,610.34/607,780.10
  6. Step 6: Final answer
    x = 533,458.80

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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.