Home / 915,395.20-1,263,320.21-507,624.93

Finding the Fourth Proportional to 915,395.20, 1,263,320.21 and 507,624.93

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Solution

The fourth proportional to 915,395.20, 1,263,320.21 and 507,624.93 is: 700,563.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,395.20 : 1,263,320.21 = 507,624.93 : x
  2. Step 2: Convert to fraction form
    915,395.20/1,263,320.21 = 507,624.93/x
  3. Step 3: Cross multiply
    915,395.20x = 1,263,320.21 × 507,624.93
  4. Step 4: Simplify right side
    915,395.20x = 641,292,833,168.84
  5. Step 5: Solve for x
    x = 641,292,833,168.84/915,395.20
  6. Step 6: Final answer
    x = 700,563.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.