Home / 830,142.40-1,243,217.76-474,077.12

Finding the Fourth Proportional to 830,142.40, 1,243,217.76 and 474,077.12

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Solution

The fourth proportional to 830,142.40, 1,243,217.76 and 474,077.12 is: 709,975.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,142.40 : 1,243,217.76 = 474,077.12 : x
  2. Step 2: Convert to fraction form
    830,142.40/1,243,217.76 = 474,077.12/x
  3. Step 3: Cross multiply
    830,142.40x = 1,243,217.76 × 474,077.12
  4. Step 4: Simplify right side
    830,142.40x = 589,381,095,193.65
  5. Step 5: Solve for x
    x = 589,381,095,193.65/830,142.40
  6. Step 6: Final answer
    x = 709,975.90

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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.