Home / 521,902,868.86-720,228,806.28-307,330,875.10

Finding the Fourth Proportional to 521,902,868.86, 720,228,806.28 and 307,330,875.10

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Solution

The fourth proportional to 521,902,868.86, 720,228,806.28 and 307,330,875.10 is: 424,118,284.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,902,868.86 : 720,228,806.28 = 307,330,875.10 : x
  2. Step 2: Convert to fraction form
    521,902,868.86/720,228,806.28 = 307,330,875.10/x
  3. Step 3: Cross multiply
    521,902,868.86x = 720,228,806.28 × 307,330,875.10
  4. Step 4: Simplify right side
    521,902,868.86x = 221,348,549,306,260,800
  5. Step 5: Solve for x
    x = 221,348,549,306,260,800/521,902,868.86
  6. Step 6: Final answer
    x = 424,118,284.29

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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.