Home / 745,415.60-1,118,123.40-509,219.60

Finding the Fourth Proportional to 745,415.60, 1,118,123.40 and 509,219.60

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Solution

The fourth proportional to 745,415.60, 1,118,123.40 and 509,219.60 is: 763,829.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,415.60 : 1,118,123.40 = 509,219.60 : x
  2. Step 2: Convert to fraction form
    745,415.60/1,118,123.40 = 509,219.60/x
  3. Step 3: Cross multiply
    745,415.60x = 1,118,123.40 × 509,219.60
  4. Step 4: Simplify right side
    745,415.60x = 569,370,350,498.64
  5. Step 5: Solve for x
    x = 569,370,350,498.64/745,415.60
  6. Step 6: Final answer
    x = 763,829.40

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Half scale
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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.