Home / 448,614.10-672,921.15-430,899.40

Finding the Fourth Proportional to 448,614.10, 672,921.15 and 430,899.40

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Solution

The fourth proportional to 448,614.10, 672,921.15 and 430,899.40 is: 646,349.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,614.10 : 672,921.15 = 430,899.40 : x
  2. Step 2: Convert to fraction form
    448,614.10/672,921.15 = 430,899.40/x
  3. Step 3: Cross multiply
    448,614.10x = 672,921.15 × 430,899.40
  4. Step 4: Simplify right side
    448,614.10x = 289,961,319,782.31
  5. Step 5: Solve for x
    x = 289,961,319,782.31/448,614.10
  6. Step 6: Final answer
    x = 646,349.10

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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.