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Finding the Fourth Proportional to 704,967.76, 972,871.95 and 418,488.94

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Solution

The fourth proportional to 704,967.76, 972,871.95 and 418,488.94 is: 577,524.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,967.76 : 972,871.95 = 418,488.94 : x
  2. Step 2: Convert to fraction form
    704,967.76/972,871.95 = 418,488.94/x
  3. Step 3: Cross multiply
    704,967.76x = 972,871.95 × 418,488.94
  4. Step 4: Simplify right side
    704,967.76x = 407,136,151,111.23
  5. Step 5: Solve for x
    x = 407,136,151,111.23/704,967.76
  6. Step 6: Final answer
    x = 577,524.50

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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.