Home / 921,881.07-1,272,279.42-559,396.76

Finding the Fourth Proportional to 921,881.07, 1,272,279.42 and 559,396.76

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Solution

The fourth proportional to 921,881.07, 1,272,279.42 and 559,396.76 is: 772,018.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,881.07 : 1,272,279.42 = 559,396.76 : x
  2. Step 2: Convert to fraction form
    921,881.07/1,272,279.42 = 559,396.76/x
  3. Step 3: Cross multiply
    921,881.07x = 1,272,279.42 × 559,396.76
  4. Step 4: Simplify right side
    921,881.07x = 711,708,979,001.28
  5. Step 5: Solve for x
    x = 711,708,979,001.28/921,881.07
  6. Step 6: Final answer
    x = 772,018.22

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Double scale
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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.