Home / 746,038.48-1,119,388.56-390,968.20

Finding the Fourth Proportional to 746,038.48, 1,119,388.56 and 390,968.20

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Solution

The fourth proportional to 746,038.48, 1,119,388.56 and 390,968.20 is: 586,625.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,038.48 : 1,119,388.56 = 390,968.20 : x
  2. Step 2: Convert to fraction form
    746,038.48/1,119,388.56 = 390,968.20/x
  3. Step 3: Cross multiply
    746,038.48x = 1,119,388.56 × 390,968.20
  4. Step 4: Simplify right side
    746,038.48x = 437,645,330,403.79
  5. Step 5: Solve for x
    x = 437,645,330,403.79/746,038.48
  6. Step 6: Final answer
    x = 586,625.68

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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.