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Finding the Fourth Proportional to 702,725,525.08, 969,761,316.53 and 389,479,962.31

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Solution

The fourth proportional to 702,725,525.08, 969,761,316.53 and 389,479,962.31 is: 537,482,398.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,725,525.08 : 969,761,316.53 = 389,479,962.31 : x
  2. Step 2: Convert to fraction form
    702,725,525.08/969,761,316.53 = 389,479,962.31/x
  3. Step 3: Cross multiply
    702,725,525.08x = 969,761,316.53 × 389,479,962.31
  4. Step 4: Simplify right side
    702,725,525.08x = 377,702,601,011,800,384
  5. Step 5: Solve for x
    x = 377,702,601,011,800,384/702,725,525.08
  6. Step 6: Final answer
    x = 537,482,398.93

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1.5x scale

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.