Home / 875,437.60-1,312,378.80-520,074.40

Finding the Fourth Proportional to 875,437.60, 1,312,378.80 and 520,074.40

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Solution

The fourth proportional to 875,437.60, 1,312,378.80 and 520,074.40 is: 779,649.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,437.60 : 1,312,378.80 = 520,074.40 : x
  2. Step 2: Convert to fraction form
    875,437.60/1,312,378.80 = 520,074.40/x
  3. Step 3: Cross multiply
    875,437.60x = 1,312,378.80 × 520,074.40
  4. Step 4: Simplify right side
    875,437.60x = 682,534,616,982.72
  5. Step 5: Solve for x
    x = 682,534,616,982.72/875,437.60
  6. Step 6: Final answer
    x = 779,649.65

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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.