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Finding the Fourth Proportional to 478,322.40, 716,101.20 and 291,698.40

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Solution

The fourth proportional to 478,322.40, 716,101.20 and 291,698.40 is: 436,704.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,322.40 : 716,101.20 = 291,698.40 : x
  2. Step 2: Convert to fraction form
    478,322.40/716,101.20 = 291,698.40/x
  3. Step 3: Cross multiply
    478,322.40x = 716,101.20 × 291,698.40
  4. Step 4: Simplify right side
    478,322.40x = 208,885,574,278.08
  5. Step 5: Solve for x
    x = 208,885,574,278.08/478,322.40
  6. Step 6: Final answer
    x = 436,704.56

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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.