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Finding the Fourth Proportional to 717,158.95, 989,682.30 and 430,683.82

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Solution

The fourth proportional to 717,158.95, 989,682.30 and 430,683.82 is: 594,345.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,158.95 : 989,682.30 = 430,683.82 : x
  2. Step 2: Convert to fraction form
    717,158.95/989,682.30 = 430,683.82/x
  3. Step 3: Cross multiply
    717,158.95x = 989,682.30 × 430,683.82
  4. Step 4: Simplify right side
    717,158.95x = 426,240,151,076.18
  5. Step 5: Solve for x
    x = 426,240,151,076.18/717,158.95
  6. Step 6: Final answer
    x = 594,345.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.