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Finding the Fourth Proportional to 453,502.80, 626,697 and 340,128.72

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Solution

The fourth proportional to 453,502.80, 626,697 and 340,128.72 is: 470,024.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,502.80 : 626,697 = 340,128.72 : x
  2. Step 2: Convert to fraction form
    453,502.80/626,697 = 340,128.72/x
  3. Step 3: Cross multiply
    453,502.80x = 626,697 × 340,128.72
  4. Step 4: Simplify right side
    453,502.80x = 213,157,648,437.84
  5. Step 5: Solve for x
    x = 213,157,648,437.84/453,502.80
  6. Step 6: Final answer
    x = 470,024.99

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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.