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Finding the Fourth Proportional to 569,071.80, 853,607.70 and 319,721.40

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Solution

The fourth proportional to 569,071.80, 853,607.70 and 319,721.40 is: 479,582.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,071.80 : 853,607.70 = 319,721.40 : x
  2. Step 2: Convert to fraction form
    569,071.80/853,607.70 = 319,721.40/x
  3. Step 3: Cross multiply
    569,071.80x = 853,607.70 × 319,721.40
  4. Step 4: Simplify right side
    569,071.80x = 272,916,648,894.78
  5. Step 5: Solve for x
    x = 272,916,648,894.78/569,071.80
  6. Step 6: Final answer
    x = 479,582.10

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Similar ratio
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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.