Home / 1,218,076,005.95-1,680,901,395.99-689,428,641.82

Finding the Fourth Proportional to 1,218,076,005.95, 1,680,901,395.99 and 689,428,641.82

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Solution

The fourth proportional to 1,218,076,005.95, 1,680,901,395.99 and 689,428,641.82 is: 951,386,909.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,076,005.95 : 1,680,901,395.99 = 689,428,641.82 : x
  2. Step 2: Convert to fraction form
    1,218,076,005.95/1,680,901,395.99 = 689,428,641.82/x
  3. Step 3: Cross multiply
    1,218,076,005.95x = 1,680,901,395.99 × 689,428,641.82
  4. Step 4: Simplify right side
    1,218,076,005.95x = 1,158,861,566,462,323,200
  5. Step 5: Solve for x
    x = 1,158,861,566,462,323,200/1,218,076,005.95
  6. Step 6: Final answer
    x = 951,386,909.19

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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.