Home / 810,762.40-1,214,568.72-390,333.28

Finding the Fourth Proportional to 810,762.40, 1,214,568.72 and 390,333.28

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Solution

The fourth proportional to 810,762.40, 1,214,568.72 and 390,333.28 is: 584,741.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,762.40 : 1,214,568.72 = 390,333.28 : x
  2. Step 2: Convert to fraction form
    810,762.40/1,214,568.72 = 390,333.28/x
  3. Step 3: Cross multiply
    810,762.40x = 1,214,568.72 × 390,333.28
  4. Step 4: Simplify right side
    810,762.40x = 474,086,592,263.00
  5. Step 5: Solve for x
    x = 474,086,592,263.00/810,762.40
  6. Step 6: Final answer
    x = 584,741.71

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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.