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Finding the Fourth Proportional to 640,442.20, 883,808.70 and 364,800.01

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Solution

The fourth proportional to 640,442.20, 883,808.70 and 364,800.01 is: 503,423.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,442.20 : 883,808.70 = 364,800.01 : x
  2. Step 2: Convert to fraction form
    640,442.20/883,808.70 = 364,800.01/x
  3. Step 3: Cross multiply
    640,442.20x = 883,808.70 × 364,800.01
  4. Step 4: Simplify right side
    640,442.20x = 322,413,421,270.00
  5. Step 5: Solve for x
    x = 322,413,421,270.00/640,442.20
  6. Step 6: Final answer
    x = 503,423.14

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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.