Home / 287,951,738.40-431,927,607.60-265,780,807.20

Finding the Fourth Proportional to 287,951,738.40, 431,927,607.60 and 265,780,807.20

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Solution

The fourth proportional to 287,951,738.40, 431,927,607.60 and 265,780,807.20 is: 398,671,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,951,738.40 : 431,927,607.60 = 265,780,807.20 : x
  2. Step 2: Convert to fraction form
    287,951,738.40/431,927,607.60 = 265,780,807.20/x
  3. Step 3: Cross multiply
    287,951,738.40x = 431,927,607.60 × 265,780,807.20
  4. Step 4: Simplify right side
    287,951,738.40x = 114,798,068,199,892,848
  5. Step 5: Solve for x
    x = 114,798,068,199,892,848/287,951,738.40
  6. Step 6: Final answer
    x = 398,671,210.80

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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.