Home / 386,018,714.28-532,711,220.40-209,806,656.84

Finding the Fourth Proportional to 386,018,714.28, 532,711,220.40 and 209,806,656.84

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Solution

The fourth proportional to 386,018,714.28, 532,711,220.40 and 209,806,656.84 is: 289,536,118.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,018,714.28 : 532,711,220.40 = 209,806,656.84 : x
  2. Step 2: Convert to fraction form
    386,018,714.28/532,711,220.40 = 209,806,656.84/x
  3. Step 3: Cross multiply
    386,018,714.28x = 532,711,220.40 × 209,806,656.84
  4. Step 4: Simplify right side
    386,018,714.28x = 111,766,360,213,280,400
  5. Step 5: Solve for x
    x = 111,766,360,213,280,400/386,018,714.28
  6. Step 6: Final answer
    x = 289,536,118.53

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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.