Home / 872,002.60-1,307,312.70-478,018.60

Finding the Fourth Proportional to 872,002.60, 1,307,312.70 and 478,018.60

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Solution

The fourth proportional to 872,002.60, 1,307,312.70 and 478,018.60 is: 716,648.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,002.60 : 1,307,312.70 = 478,018.60 : x
  2. Step 2: Convert to fraction form
    872,002.60/1,307,312.70 = 478,018.60/x
  3. Step 3: Cross multiply
    872,002.60x = 1,307,312.70 × 478,018.60
  4. Step 4: Simplify right side
    872,002.60x = 624,919,786,616.22
  5. Step 5: Solve for x
    x = 624,919,786,616.22/872,002.60
  6. Step 6: Final answer
    x = 716,648.99

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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.