Home / 426,264,765.60-639,397,148.40-288,515,258.40

Finding the Fourth Proportional to 426,264,765.60, 639,397,148.40 and 288,515,258.40

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Solution

The fourth proportional to 426,264,765.60, 639,397,148.40 and 288,515,258.40 is: 432,772,887.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,264,765.60 : 639,397,148.40 = 288,515,258.40 : x
  2. Step 2: Convert to fraction form
    426,264,765.60/639,397,148.40 = 288,515,258.40/x
  3. Step 3: Cross multiply
    426,264,765.60x = 639,397,148.40 × 288,515,258.40
  4. Step 4: Simplify right side
    426,264,765.60x = 184,475,833,490,849,120
  5. Step 5: Solve for x
    x = 184,475,833,490,849,120/426,264,765.60
  6. Step 6: Final answer
    x = 432,772,887.60

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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.