Home / 1,128,710,772.02-1,693,284,191.40-429,148,515.36

Finding the Fourth Proportional to 1,128,710,772.02, 1,693,284,191.40 and 429,148,515.36

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Solution

The fourth proportional to 1,128,710,772.02, 1,693,284,191.40 and 429,148,515.36 is: 643,805,671.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,710,772.02 : 1,693,284,191.40 = 429,148,515.36 : x
  2. Step 2: Convert to fraction form
    1,128,710,772.02/1,693,284,191.40 = 429,148,515.36/x
  3. Step 3: Cross multiply
    1,128,710,772.02x = 1,693,284,191.40 × 429,148,515.36
  4. Step 4: Simplify right side
    1,128,710,772.02x = 726,670,396,820,272,640
  5. Step 5: Solve for x
    x = 726,670,396,820,272,640/1,128,710,772.02
  6. Step 6: Final answer
    x = 643,805,671.78

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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.