Home / 386,831,461.32-533,865,078.90-288,876,256.20

Finding the Fourth Proportional to 386,831,461.32, 533,865,078.90 and 288,876,256.20

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Solution

The fourth proportional to 386,831,461.32, 533,865,078.90 and 288,876,256.20 is: 398,677,358.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,831,461.32 : 533,865,078.90 = 288,876,256.20 : x
  2. Step 2: Convert to fraction form
    386,831,461.32/533,865,078.90 = 288,876,256.20/x
  3. Step 3: Cross multiply
    386,831,461.32x = 533,865,078.90 × 288,876,256.20
  4. Step 4: Simplify right side
    386,831,461.32x = 154,220,945,308,549,600
  5. Step 5: Solve for x
    x = 154,220,945,308,549,600/386,831,461.32
  6. Step 6: Final answer
    x = 398,677,358.82

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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.