Home / 840,878,294.64-1,160,243,749.08-469,543,190.64

Finding the Fourth Proportional to 840,878,294.64, 1,160,243,749.08 and 469,543,190.64

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Solution

The fourth proportional to 840,878,294.64, 1,160,243,749.08 and 469,543,190.64 is: 647,875,626.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,878,294.64 : 1,160,243,749.08 = 469,543,190.64 : x
  2. Step 2: Convert to fraction form
    840,878,294.64/1,160,243,749.08 = 469,543,190.64/x
  3. Step 3: Cross multiply
    840,878,294.64x = 1,160,243,749.08 × 469,543,190.64
  4. Step 4: Simplify right side
    840,878,294.64x = 544,784,551,863,138,688
  5. Step 5: Solve for x
    x = 544,784,551,863,138,688/840,878,294.64
  6. Step 6: Final answer
    x = 647,875,626.40

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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.