Home / 678,282.40-1,017,423.60-521,303.20

Finding the Fourth Proportional to 678,282.40, 1,017,423.60 and 521,303.20

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Solution

The fourth proportional to 678,282.40, 1,017,423.60 and 521,303.20 is: 781,954.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,282.40 : 1,017,423.60 = 521,303.20 : x
  2. Step 2: Convert to fraction form
    678,282.40/1,017,423.60 = 521,303.20/x
  3. Step 3: Cross multiply
    678,282.40x = 1,017,423.60 × 521,303.20
  4. Step 4: Simplify right side
    678,282.40x = 530,386,178,435.52
  5. Step 5: Solve for x
    x = 530,386,178,435.52/678,282.40
  6. Step 6: Final answer
    x = 781,954.80

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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.