Home / 788,495.40-1,182,743.10-489,313.80

Finding the Fourth Proportional to 788,495.40, 1,182,743.10 and 489,313.80

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Solution

The fourth proportional to 788,495.40, 1,182,743.10 and 489,313.80 is: 733,970.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,495.40 : 1,182,743.10 = 489,313.80 : x
  2. Step 2: Convert to fraction form
    788,495.40/1,182,743.10 = 489,313.80/x
  3. Step 3: Cross multiply
    788,495.40x = 1,182,743.10 × 489,313.80
  4. Step 4: Simplify right side
    788,495.40x = 578,732,520,684.78
  5. Step 5: Solve for x
    x = 578,732,520,684.78/788,495.40
  6. Step 6: Final answer
    x = 733,970.70

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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.