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Finding the Fourth Proportional to 437,526.10, 656,289.15 and 400,128.40

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Solution

The fourth proportional to 437,526.10, 656,289.15 and 400,128.40 is: 600,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,526.10 : 656,289.15 = 400,128.40 : x
  2. Step 2: Convert to fraction form
    437,526.10/656,289.15 = 400,128.40/x
  3. Step 3: Cross multiply
    437,526.10x = 656,289.15 × 400,128.40
  4. Step 4: Simplify right side
    437,526.10x = 262,599,927,526.86
  5. Step 5: Solve for x
    x = 262,599,927,526.86/437,526.10
  6. Step 6: Final answer
    x = 600,192.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.