Home / 1,218,076,033.86-1,680,901,434.50-689,428,669.79

Finding the Fourth Proportional to 1,218,076,033.86, 1,680,901,434.50 and 689,428,669.79

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Solution

The fourth proportional to 1,218,076,033.86, 1,680,901,434.50 and 689,428,669.79 is: 951,386,947.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,076,033.86 : 1,680,901,434.50 = 689,428,669.79 : x
  2. Step 2: Convert to fraction form
    1,218,076,033.86/1,680,901,434.50 = 689,428,669.79/x
  3. Step 3: Cross multiply
    1,218,076,033.86x = 1,680,901,434.50 × 689,428,669.79
  4. Step 4: Simplify right side
    1,218,076,033.86x = 1,158,861,640,036,192,768
  5. Step 5: Solve for x
    x = 1,158,861,640,036,192,768/1,218,076,033.86
  6. Step 6: Final answer
    x = 951,386,947.79

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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.