Home / 570,151.90-786,811.08-315,512.20

Finding the Fourth Proportional to 570,151.90, 786,811.08 and 315,512.20

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Solution

The fourth proportional to 570,151.90, 786,811.08 and 315,512.20 is: 435,407.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,151.90 : 786,811.08 = 315,512.20 : x
  2. Step 2: Convert to fraction form
    570,151.90/786,811.08 = 315,512.20/x
  3. Step 3: Cross multiply
    570,151.90x = 786,811.08 × 315,512.20
  4. Step 4: Simplify right side
    570,151.90x = 248,248,494,835.18
  5. Step 5: Solve for x
    x = 248,248,494,835.18/570,151.90
  6. Step 6: Final answer
    x = 435,407.64

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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.