Home / 781,354,702.90-1,078,229,892.18-463,828,521.39

Finding the Fourth Proportional to 781,354,702.90, 1,078,229,892.18 and 463,828,521.39

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Solution

The fourth proportional to 781,354,702.90, 1,078,229,892.18 and 463,828,521.39 is: 640,059,853.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,354,702.90 : 1,078,229,892.18 = 463,828,521.39 : x
  2. Step 2: Convert to fraction form
    781,354,702.90/1,078,229,892.18 = 463,828,521.39/x
  3. Step 3: Cross multiply
    781,354,702.90x = 1,078,229,892.18 × 463,828,521.39
  4. Step 4: Simplify right side
    781,354,702.90x = 500,113,776,608,348,544
  5. Step 5: Solve for x
    x = 500,113,776,608,348,544/781,354,702.90
  6. Step 6: Final answer
    x = 640,059,853.42

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Double scale
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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.