Home / 1,128,710,909.79-1,693,284,398.19-429,148,653.26

Finding the Fourth Proportional to 1,128,710,909.79, 1,693,284,398.19 and 429,148,653.26

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Solution

The fourth proportional to 1,128,710,909.79, 1,693,284,398.19 and 429,148,653.26 is: 643,805,878.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,710,909.79 : 1,693,284,398.19 = 429,148,653.26 : x
  2. Step 2: Convert to fraction form
    1,128,710,909.79/1,693,284,398.19 = 429,148,653.26/x
  3. Step 3: Cross multiply
    1,128,710,909.79x = 1,693,284,398.19 × 429,148,653.26
  4. Step 4: Simplify right side
    1,128,710,909.79x = 726,670,719,060,941,696
  5. Step 5: Solve for x
    x = 726,670,719,060,941,696/1,128,710,909.79
  6. Step 6: Final answer
    x = 643,805,878.69

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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.