Home / 8,320,875.10-12,456,429.45-7,828,740.70

Finding the Fourth Proportional to 8,320,875.10, 12,456,429.45 and 7,828,740.70

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Solution

The fourth proportional to 8,320,875.10, 12,456,429.45 and 7,828,740.70 is: 11,719,699.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320,875.10 : 12,456,429.45 = 7,828,740.70 : x
  2. Step 2: Convert to fraction form
    8,320,875.10/12,456,429.45 = 7,828,740.70/x
  3. Step 3: Cross multiply
    8,320,875.10x = 12,456,429.45 × 7,828,740.70
  4. Step 4: Simplify right side
    8,320,875.10x = 97,518,156,211,893.61
  5. Step 5: Solve for x
    x = 97,518,156,211,893.61/8,320,875.10
  6. Step 6: Final answer
    x = 11,719,699.56

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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.