Home / 875,240.90-1,312,861.35-520,072.10

Finding the Fourth Proportional to 875,240.90, 1,312,861.35 and 520,072.10

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Solution

The fourth proportional to 875,240.90, 1,312,861.35 and 520,072.10 is: 780,108.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,240.90 : 1,312,861.35 = 520,072.10 : x
  2. Step 2: Convert to fraction form
    875,240.90/1,312,861.35 = 520,072.10/x
  3. Step 3: Cross multiply
    875,240.90x = 1,312,861.35 × 520,072.10
  4. Step 4: Simplify right side
    875,240.90x = 682,782,559,303.34
  5. Step 5: Solve for x
    x = 682,782,559,303.34/875,240.90
  6. Step 6: Final answer
    x = 780,108.15

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Double scale
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Similar ratio
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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.