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Finding the Fourth Proportional to 891,769,607.60, 1,337,654,411.40 and 687,696,263.60

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Solution

The fourth proportional to 891,769,607.60, 1,337,654,411.40 and 687,696,263.60 is: 1,031,544,395.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,769,607.60 : 1,337,654,411.40 = 687,696,263.60 : x
  2. Step 2: Convert to fraction form
    891,769,607.60/1,337,654,411.40 = 687,696,263.60/x
  3. Step 3: Cross multiply
    891,769,607.60x = 1,337,654,411.40 × 687,696,263.60
  4. Step 4: Simplify right side
    891,769,607.60x = 919,899,940,707,837,312
  5. Step 5: Solve for x
    x = 919,899,940,707,837,312/891,769,607.60
  6. Step 6: Final answer
    x = 1,031,544,395.40

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1.5x scale

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.