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Finding the Fourth Proportional to 673,290.47, 929,477.54 and 418,723.67

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Solution

The fourth proportional to 673,290.47, 929,477.54 and 418,723.67 is: 578,048.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,290.47 : 929,477.54 = 418,723.67 : x
  2. Step 2: Convert to fraction form
    673,290.47/929,477.54 = 418,723.67/x
  3. Step 3: Cross multiply
    673,290.47x = 929,477.54 × 418,723.67
  4. Step 4: Simplify right side
    673,290.47x = 389,194,243,130.79
  5. Step 5: Solve for x
    x = 389,194,243,130.79/673,290.47
  6. Step 6: Final answer
    x = 578,048.05

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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.