Home / 812,165.60-1,120,413.12-525,778.40

Finding the Fourth Proportional to 812,165.60, 1,120,413.12 and 525,778.40

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Solution

The fourth proportional to 812,165.60, 1,120,413.12 and 525,778.40 is: 725,331.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,165.60 : 1,120,413.12 = 525,778.40 : x
  2. Step 2: Convert to fraction form
    812,165.60/1,120,413.12 = 525,778.40/x
  3. Step 3: Cross multiply
    812,165.60x = 1,120,413.12 × 525,778.40
  4. Step 4: Simplify right side
    812,165.60x = 589,089,017,572.61
  5. Step 5: Solve for x
    x = 589,089,017,572.61/812,165.60
  6. Step 6: Final answer
    x = 725,331.16

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Double scale
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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.