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Finding the Fourth Proportional to 879,311.52, 1,213,477.44 and 497,330.88

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Solution

The fourth proportional to 879,311.52, 1,213,477.44 and 497,330.88 is: 686,332.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,311.52 : 1,213,477.44 = 497,330.88 : x
  2. Step 2: Convert to fraction form
    879,311.52/1,213,477.44 = 497,330.88/x
  3. Step 3: Cross multiply
    879,311.52x = 1,213,477.44 × 497,330.88
  4. Step 4: Simplify right side
    879,311.52x = 603,499,803,095.35
  5. Step 5: Solve for x
    x = 603,499,803,095.35/879,311.52
  6. Step 6: Final answer
    x = 686,332.19

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1.5x scale

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.