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Finding the Fourth Proportional to 570,301.35, 786,991.10 and 315,637.35

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Solution

The fourth proportional to 570,301.35, 786,991.10 and 315,637.35 is: 435,565.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,301.35 : 786,991.10 = 315,637.35 : x
  2. Step 2: Convert to fraction form
    570,301.35/786,991.10 = 315,637.35/x
  3. Step 3: Cross multiply
    570,301.35x = 786,991.10 × 315,637.35
  4. Step 4: Simplify right side
    570,301.35x = 248,403,785,277.59
  5. Step 5: Solve for x
    x = 248,403,785,277.59/570,301.35
  6. Step 6: Final answer
    x = 435,565.84

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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.