Home / 875,441.60-1,312,384.80-520,078.40

Finding the Fourth Proportional to 875,441.60, 1,312,384.80 and 520,078.40

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Solution

The fourth proportional to 875,441.60, 1,312,384.80 and 520,078.40 is: 779,655.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,441.60 : 1,312,384.80 = 520,078.40 : x
  2. Step 2: Convert to fraction form
    875,441.60/1,312,384.80 = 520,078.40/x
  3. Step 3: Cross multiply
    875,441.60x = 1,312,384.80 × 520,078.40
  4. Step 4: Simplify right side
    875,441.60x = 682,542,986,968.32
  5. Step 5: Solve for x
    x = 682,542,986,968.32/875,441.60
  6. Step 6: Final answer
    x = 779,655.65

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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.