Home / 711,109,509.22-1,064,539,073.38-430,140,124.42

Finding the Fourth Proportional to 711,109,509.22, 1,064,539,073.38 and 430,140,124.42

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Solution

The fourth proportional to 711,109,509.22, 1,064,539,073.38 and 430,140,124.42 is: 643,924,688.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,109,509.22 : 1,064,539,073.38 = 430,140,124.42 : x
  2. Step 2: Convert to fraction form
    711,109,509.22/1,064,539,073.38 = 430,140,124.42/x
  3. Step 3: Cross multiply
    711,109,509.22x = 1,064,539,073.38 × 430,140,124.42
  4. Step 4: Simplify right side
    711,109,509.22x = 457,900,969,473,624,704
  5. Step 5: Solve for x
    x = 457,900,969,473,624,704/711,109,509.22
  6. Step 6: Final answer
    x = 643,924,688.87

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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.