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Finding the Fourth Proportional to 557,337.69, 769,173.45 and 315,663.26

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Solution

The fourth proportional to 557,337.69, 769,173.45 and 315,663.26 is: 435,642.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,337.69 : 769,173.45 = 315,663.26 : x
  2. Step 2: Convert to fraction form
    557,337.69/769,173.45 = 315,663.26/x
  3. Step 3: Cross multiply
    557,337.69x = 769,173.45 × 315,663.26
  4. Step 4: Simplify right side
    557,337.69x = 242,799,794,886.58
  5. Step 5: Solve for x
    x = 242,799,794,886.58/557,337.69
  6. Step 6: Final answer
    x = 435,642.16

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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.