Home / 826,430.60-1,239,427.20-257,810.60

Finding the Fourth Proportional to 826,430.60, 1,239,427.20 and 257,810.60

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Solution

The fourth proportional to 826,430.60, 1,239,427.20 and 257,810.60 is: 386,647.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,430.60 : 1,239,427.20 = 257,810.60 : x
  2. Step 2: Convert to fraction form
    826,430.60/1,239,427.20 = 257,810.60/x
  3. Step 3: Cross multiply
    826,430.60x = 1,239,427.20 × 257,810.60
  4. Step 4: Simplify right side
    826,430.60x = 319,537,470,088.32
  5. Step 5: Solve for x
    x = 319,537,470,088.32/826,430.60
  6. Step 6: Final answer
    x = 386,647.68

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Double scale
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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.