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Finding the Fourth Proportional to 623,390.52, 859,879.98 and 432,334.20

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Solution

The fourth proportional to 623,390.52, 859,879.98 and 432,334.20 is: 596,344.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,390.52 : 859,879.98 = 432,334.20 : x
  2. Step 2: Convert to fraction form
    623,390.52/859,879.98 = 432,334.20/x
  3. Step 3: Cross multiply
    623,390.52x = 859,879.98 × 432,334.20
  4. Step 4: Simplify right side
    623,390.52x = 371,755,523,249.32
  5. Step 5: Solve for x
    x = 371,755,523,249.32/623,390.52
  6. Step 6: Final answer
    x = 596,344.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.