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Finding the Fourth Proportional to 564,337.61, 778,808.37 and 309,697.91

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Solution

The fourth proportional to 564,337.61, 778,808.37 and 309,697.91 is: 427,395.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,337.61 : 778,808.37 = 309,697.91 : x
  2. Step 2: Convert to fraction form
    564,337.61/778,808.37 = 309,697.91/x
  3. Step 3: Cross multiply
    564,337.61x = 778,808.37 × 309,697.91
  4. Step 4: Simplify right side
    564,337.61x = 241,195,322,931.02
  5. Step 5: Solve for x
    x = 241,195,322,931.02/564,337.61
  6. Step 6: Final answer
    x = 427,395.44

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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.