Home / 890,686,897.32-1,229,091,892.42-538,054,142.44

Finding the Fourth Proportional to 890,686,897.32, 1,229,091,892.42 and 538,054,142.44

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Solution

The fourth proportional to 890,686,897.32, 1,229,091,892.42 and 538,054,142.44 is: 742,480,871.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,686,897.32 : 1,229,091,892.42 = 538,054,142.44 : x
  2. Step 2: Convert to fraction form
    890,686,897.32/1,229,091,892.42 = 538,054,142.44/x
  3. Step 3: Cross multiply
    890,686,897.32x = 1,229,091,892.42 × 538,054,142.44
  4. Step 4: Simplify right side
    890,686,897.32x = 661,317,984,156,000,000
  5. Step 5: Solve for x
    x = 661,317,984,156,000,000/890,686,897.32
  6. Step 6: Final answer
    x = 742,480,871.95

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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.