Home / 913,455.90-1,369,600.65-381,188.70

Finding the Fourth Proportional to 913,455.90, 1,369,600.65 and 381,188.70

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Solution

The fourth proportional to 913,455.90, 1,369,600.65 and 381,188.70 is: 571,539.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,455.90 : 1,369,600.65 = 381,188.70 : x
  2. Step 2: Convert to fraction form
    913,455.90/1,369,600.65 = 381,188.70/x
  3. Step 3: Cross multiply
    913,455.90x = 1,369,600.65 × 381,188.70
  4. Step 4: Simplify right side
    913,455.90x = 522,076,291,292.66
  5. Step 5: Solve for x
    x = 522,076,291,292.66/913,455.90
  6. Step 6: Final answer
    x = 571,539.68

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1.5x scale

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.