Home / 642,962.21-962,551.40-429,199.93

Finding the Fourth Proportional to 642,962.21, 962,551.40 and 429,199.93

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Solution

The fourth proportional to 642,962.21, 962,551.40 and 429,199.93 is: 642,536.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,962.21 : 962,551.40 = 429,199.93 : x
  2. Step 2: Convert to fraction form
    642,962.21/962,551.40 = 429,199.93/x
  3. Step 3: Cross multiply
    642,962.21x = 962,551.40 × 429,199.93
  4. Step 4: Simplify right side
    642,962.21x = 413,126,988,688.65
  5. Step 5: Solve for x
    x = 413,126,988,688.65/642,962.21
  6. Step 6: Final answer
    x = 642,536.97

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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.