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Finding the Fourth Proportional to 525,473.20, 788,209.80 and 315,521.20

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Solution

The fourth proportional to 525,473.20, 788,209.80 and 315,521.20 is: 473,281.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,473.20 : 788,209.80 = 315,521.20 : x
  2. Step 2: Convert to fraction form
    525,473.20/788,209.80 = 315,521.20/x
  3. Step 3: Cross multiply
    525,473.20x = 788,209.80 × 315,521.20
  4. Step 4: Simplify right side
    525,473.20x = 248,696,901,947.76
  5. Step 5: Solve for x
    x = 248,696,901,947.76/525,473.20
  6. Step 6: Final answer
    x = 473,281.80

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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.