Home / 648,319.30-971,312.55-555,007.30

Finding the Fourth Proportional to 648,319.30, 971,312.55 and 555,007.30

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Solution

The fourth proportional to 648,319.30, 971,312.55 and 555,007.30 is: 831,512.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,319.30 : 971,312.55 = 555,007.30 : x
  2. Step 2: Convert to fraction form
    648,319.30/971,312.55 = 555,007.30/x
  3. Step 3: Cross multiply
    648,319.30x = 971,312.55 × 555,007.30
  4. Step 4: Simplify right side
    648,319.30x = 539,085,555,831.62
  5. Step 5: Solve for x
    x = 539,085,555,831.62/648,319.30
  6. Step 6: Final answer
    x = 831,512.43

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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.