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Finding the Fourth Proportional to 660,357.01, 911,307.27 and 369,989.93

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Solution

The fourth proportional to 660,357.01, 911,307.27 and 369,989.93 is: 510,594.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,357.01 : 911,307.27 = 369,989.93 : x
  2. Step 2: Convert to fraction form
    660,357.01/911,307.27 = 369,989.93/x
  3. Step 3: Cross multiply
    660,357.01x = 911,307.27 × 369,989.93
  4. Step 4: Simplify right side
    660,357.01x = 337,174,516,701.52
  5. Step 5: Solve for x
    x = 337,174,516,701.52/660,357.01
  6. Step 6: Final answer
    x = 510,594.29

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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.