Home / 749,873.80-1,124,810.70-435,140.20

Finding the Fourth Proportional to 749,873.80, 1,124,810.70 and 435,140.20

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Solution

The fourth proportional to 749,873.80, 1,124,810.70 and 435,140.20 is: 652,710.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,873.80 : 1,124,810.70 = 435,140.20 : x
  2. Step 2: Convert to fraction form
    749,873.80/1,124,810.70 = 435,140.20/x
  3. Step 3: Cross multiply
    749,873.80x = 1,124,810.70 × 435,140.20
  4. Step 4: Simplify right side
    749,873.80x = 489,450,352,960.14
  5. Step 5: Solve for x
    x = 489,450,352,960.14/749,873.80
  6. Step 6: Final answer
    x = 652,710.30

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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.