Home / 917,740,138.88-1,266,465,445.80-500,055,856.40

Finding the Fourth Proportional to 917,740,138.88, 1,266,465,445.80 and 500,055,856.40

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Solution

The fourth proportional to 917,740,138.88, 1,266,465,445.80 and 500,055,856.40 is: 690,068,393.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,740,138.88 : 1,266,465,445.80 = 500,055,856.40 : x
  2. Step 2: Convert to fraction form
    917,740,138.88/1,266,465,445.80 = 500,055,856.40/x
  3. Step 3: Cross multiply
    917,740,138.88x = 1,266,465,445.80 × 500,055,856.40
  4. Step 4: Simplify right side
    917,740,138.88x = 633,303,463,100,526,720
  5. Step 5: Solve for x
    x = 633,303,463,100,526,720/917,740,138.88
  6. Step 6: Final answer
    x = 690,068,393.30

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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.