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Finding the Fourth Proportional to 644,833.50, 889,802.56 and 358,307.34

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Solution

The fourth proportional to 644,833.50, 889,802.56 and 358,307.34 is: 494,426.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,833.50 : 889,802.56 = 358,307.34 : x
  2. Step 2: Convert to fraction form
    644,833.50/889,802.56 = 358,307.34/x
  3. Step 3: Cross multiply
    644,833.50x = 889,802.56 × 358,307.34
  4. Step 4: Simplify right side
    644,833.50x = 318,822,788,398.79
  5. Step 5: Solve for x
    x = 318,822,788,398.79/644,833.50
  6. Step 6: Final answer
    x = 494,426.53

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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.