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Finding the Fourth Proportional to 978,279,496.32, 1,349,511,154.56 and 581,520,276.48

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Solution

The fourth proportional to 978,279,496.32, 1,349,511,154.56 and 581,520,276.48 is: 802,192,116.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,279,496.32 : 1,349,511,154.56 = 581,520,276.48 : x
  2. Step 2: Convert to fraction form
    978,279,496.32/1,349,511,154.56 = 581,520,276.48/x
  3. Step 3: Cross multiply
    978,279,496.32x = 1,349,511,154.56 × 581,520,276.48
  4. Step 4: Simplify right side
    978,279,496.32x = 784,768,099,712,575,232
  5. Step 5: Solve for x
    x = 784,768,099,712,575,232/978,279,496.32
  6. Step 6: Final answer
    x = 802,192,116.53

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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.