Home / 872,827.40-1,308,981.90-340,041.80

Finding the Fourth Proportional to 872,827.40, 1,308,981.90 and 340,041.80

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Solution

The fourth proportional to 872,827.40, 1,308,981.90 and 340,041.80 is: 509,961.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,827.40 : 1,308,981.90 = 340,041.80 : x
  2. Step 2: Convert to fraction form
    872,827.40/1,308,981.90 = 340,041.80/x
  3. Step 3: Cross multiply
    872,827.40x = 1,308,981.90 × 340,041.80
  4. Step 4: Simplify right side
    872,827.40x = 445,108,561,443.42
  5. Step 5: Solve for x
    x = 445,108,561,443.42/872,827.40
  6. Step 6: Final answer
    x = 509,961.72

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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.