Home / 651,710.40-977,565.60-315,009.60

Finding the Fourth Proportional to 651,710.40, 977,565.60 and 315,009.60

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Solution

The fourth proportional to 651,710.40, 977,565.60 and 315,009.60 is: 472,514.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,710.40 : 977,565.60 = 315,009.60 : x
  2. Step 2: Convert to fraction form
    651,710.40/977,565.60 = 315,009.60/x
  3. Step 3: Cross multiply
    651,710.40x = 977,565.60 × 315,009.60
  4. Step 4: Simplify right side
    651,710.40x = 307,942,548,629.76
  5. Step 5: Solve for x
    x = 307,942,548,629.76/651,710.40
  6. Step 6: Final answer
    x = 472,514.40

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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.