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Finding the Fourth Proportional to 1,342,549,615.12, 1,852,737,663.36 and 770,425,901.72

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Solution

The fourth proportional to 1,342,549,615.12, 1,852,737,663.36 and 770,425,901.72 is: 1,063,198,759.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342,549,615.12 : 1,852,737,663.36 = 770,425,901.72 : x
  2. Step 2: Convert to fraction form
    1,342,549,615.12/1,852,737,663.36 = 770,425,901.72/x
  3. Step 3: Cross multiply
    1,342,549,615.12x = 1,852,737,663.36 × 770,425,901.72
  4. Step 4: Simplify right side
    1,342,549,615.12x = 1,427,397,084,944,733,696
  5. Step 5: Solve for x
    x = 1,427,397,084,944,733,696/1,342,549,615.12
  6. Step 6: Final answer
    x = 1,063,198,759.19

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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.