Home / 875,434.60-1,312,374.30-520,071.40

Finding the Fourth Proportional to 875,434.60, 1,312,374.30 and 520,071.40

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Solution

The fourth proportional to 875,434.60, 1,312,374.30 and 520,071.40 is: 779,645.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,434.60 : 1,312,374.30 = 520,071.40 : x
  2. Step 2: Convert to fraction form
    875,434.60/1,312,374.30 = 520,071.40/x
  3. Step 3: Cross multiply
    875,434.60x = 1,312,374.30 × 520,071.40
  4. Step 4: Simplify right side
    875,434.60x = 682,528,339,525.02
  5. Step 5: Solve for x
    x = 682,528,339,525.02/875,434.60
  6. Step 6: Final answer
    x = 779,645.15

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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.