Home / 749,384.40-1,124,076.60-434,456.40

Finding the Fourth Proportional to 749,384.40, 1,124,076.60 and 434,456.40

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Solution

The fourth proportional to 749,384.40, 1,124,076.60 and 434,456.40 is: 651,684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,384.40 : 1,124,076.60 = 434,456.40 : x
  2. Step 2: Convert to fraction form
    749,384.40/1,124,076.60 = 434,456.40/x
  3. Step 3: Cross multiply
    749,384.40x = 1,124,076.60 × 434,456.40
  4. Step 4: Simplify right side
    749,384.40x = 488,362,272,960.24
  5. Step 5: Solve for x
    x = 488,362,272,960.24/749,384.40
  6. Step 6: Final answer
    x = 651,684.60

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Double scale
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Similar ratio
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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.