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Finding the Fourth Proportional to 403,566,017.40, 605,349,026.10 and 369,128,640.60

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Solution

The fourth proportional to 403,566,017.40, 605,349,026.10 and 369,128,640.60 is: 553,692,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,566,017.40 : 605,349,026.10 = 369,128,640.60 : x
  2. Step 2: Convert to fraction form
    403,566,017.40/605,349,026.10 = 369,128,640.60/x
  3. Step 3: Cross multiply
    403,566,017.40x = 605,349,026.10 × 369,128,640.60
  4. Step 4: Simplify right side
    403,566,017.40x = 223,451,663,092,826,944
  5. Step 5: Solve for x
    x = 223,451,663,092,826,944/403,566,017.40
  6. Step 6: Final answer
    x = 553,692,960.90

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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.