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Finding the Fourth Proportional to 557,337.19, 769,172.76 and 315,662.76

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Solution

The fourth proportional to 557,337.19, 769,172.76 and 315,662.76 is: 435,641.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,337.19 : 769,172.76 = 315,662.76 : x
  2. Step 2: Convert to fraction form
    557,337.19/769,172.76 = 315,662.76/x
  3. Step 3: Cross multiply
    557,337.19x = 769,172.76 × 315,662.76
  4. Step 4: Simplify right side
    557,337.19x = 242,799,191,703.40
  5. Step 5: Solve for x
    x = 242,799,191,703.40/557,337.19
  6. Step 6: Final answer
    x = 435,641.47

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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.