Home / 1,287,930,853.80-1,931,896,280.70-879,784,165.80

Finding the Fourth Proportional to 1,287,930,853.80, 1,931,896,280.70 and 879,784,165.80

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Solution

The fourth proportional to 1,287,930,853.80, 1,931,896,280.70 and 879,784,165.80 is: 1,319,676,248.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,930,853.80 : 1,931,896,280.70 = 879,784,165.80 : x
  2. Step 2: Convert to fraction form
    1,287,930,853.80/1,931,896,280.70 = 879,784,165.80/x
  3. Step 3: Cross multiply
    1,287,930,853.80x = 1,931,896,280.70 × 879,784,165.80
  4. Step 4: Simplify right side
    1,287,930,853.80x = 1,699,651,757,727,772,160
  5. Step 5: Solve for x
    x = 1,699,651,757,727,772,160/1,287,930,853.80
  6. Step 6: Final answer
    x = 1,319,676,248.70

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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.