Home / 917,740,139.88-1,266,465,447.18-500,055,857.40

Finding the Fourth Proportional to 917,740,139.88, 1,266,465,447.18 and 500,055,857.40

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Solution

The fourth proportional to 917,740,139.88, 1,266,465,447.18 and 500,055,857.40 is: 690,068,394.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,740,139.88 : 1,266,465,447.18 = 500,055,857.40 : x
  2. Step 2: Convert to fraction form
    917,740,139.88/1,266,465,447.18 = 500,055,857.40/x
  3. Step 3: Cross multiply
    917,740,139.88x = 1,266,465,447.18 × 500,055,857.40
  4. Step 4: Simplify right side
    917,740,139.88x = 633,303,465,057,069,312
  5. Step 5: Solve for x
    x = 633,303,465,057,069,312/917,740,139.88
  6. Step 6: Final answer
    x = 690,068,394.68

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1.5x scale

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.