Home / 898,129,315.80-1,347,193,973.70-511,145,789.40

Finding the Fourth Proportional to 898,129,315.80, 1,347,193,973.70 and 511,145,789.40

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Solution

The fourth proportional to 898,129,315.80, 1,347,193,973.70 and 511,145,789.40 is: 766,718,684.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,129,315.80 : 1,347,193,973.70 = 511,145,789.40 : x
  2. Step 2: Convert to fraction form
    898,129,315.80/1,347,193,973.70 = 511,145,789.40/x
  3. Step 3: Cross multiply
    898,129,315.80x = 1,347,193,973.70 × 511,145,789.40
  4. Step 4: Simplify right side
    898,129,315.80x = 688,612,527,161,809,280
  5. Step 5: Solve for x
    x = 688,612,527,161,809,280/898,129,315.80
  6. Step 6: Final answer
    x = 766,718,684.10

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Double scale
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Similar ratio
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1.5x scale

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.