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Finding the Fourth Proportional to 898,421.80, 1,239,374.65 and 535,590

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Solution

The fourth proportional to 898,421.80, 1,239,374.65 and 535,590 is: 738,847.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,421.80 : 1,239,374.65 = 535,590 : x
  2. Step 2: Convert to fraction form
    898,421.80/1,239,374.65 = 535,590/x
  3. Step 3: Cross multiply
    898,421.80x = 1,239,374.65 × 535,590
  4. Step 4: Simplify right side
    898,421.80x = 663,796,668,793.50
  5. Step 5: Solve for x
    x = 663,796,668,793.50/898,421.80
  6. Step 6: Final answer
    x = 738,847.46

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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.