Home / 439,912,985.60-660,574,502.40-349,786,035.20

Finding the Fourth Proportional to 439,912,985.60, 660,574,502.40 and 349,786,035.20

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Solution

The fourth proportional to 439,912,985.60, 660,574,502.40 and 349,786,035.20 is: 525,239,635.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,912,985.60 : 660,574,502.40 = 349,786,035.20 : x
  2. Step 2: Convert to fraction form
    439,912,985.60/660,574,502.40 = 349,786,035.20/x
  3. Step 3: Cross multiply
    439,912,985.60x = 660,574,502.40 × 349,786,035.20
  4. Step 4: Simplify right side
    439,912,985.60x = 231,059,736,148,708,864
  5. Step 5: Solve for x
    x = 231,059,736,148,708,864/439,912,985.60
  6. Step 6: Final answer
    x = 525,239,635.36

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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.