Home / 525,470.20-788,205.30-315,518.20

Finding the Fourth Proportional to 525,470.20, 788,205.30 and 315,518.20

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Solution

The fourth proportional to 525,470.20, 788,205.30 and 315,518.20 is: 473,277.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,470.20 : 788,205.30 = 315,518.20 : x
  2. Step 2: Convert to fraction form
    525,470.20/788,205.30 = 315,518.20/x
  3. Step 3: Cross multiply
    525,470.20x = 788,205.30 × 315,518.20
  4. Step 4: Simplify right side
    525,470.20x = 248,693,117,486.46
  5. Step 5: Solve for x
    x = 248,693,117,486.46/525,470.20
  6. Step 6: Final answer
    x = 473,277.30

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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.