Home / 838,430.40-1,256,855.04-417,308.16

Finding the Fourth Proportional to 838,430.40, 1,256,855.04 and 417,308.16

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Solution

The fourth proportional to 838,430.40, 1,256,855.04 and 417,308.16 is: 625,568.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,430.40 : 1,256,855.04 = 417,308.16 : x
  2. Step 2: Convert to fraction form
    838,430.40/1,256,855.04 = 417,308.16/x
  3. Step 3: Cross multiply
    838,430.40x = 1,256,855.04 × 417,308.16
  4. Step 4: Simplify right side
    838,430.40x = 524,495,864,129.13
  5. Step 5: Solve for x
    x = 524,495,864,129.13/838,430.40
  6. Step 6: Final answer
    x = 625,568.76

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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.