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Finding the Fourth Proportional to 644,242.22, 889,095.40 and 357,762.30

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Solution

The fourth proportional to 644,242.22, 889,095.40 and 357,762.30 is: 493,734.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,242.22 : 889,095.40 = 357,762.30 : x
  2. Step 2: Convert to fraction form
    644,242.22/889,095.40 = 357,762.30/x
  3. Step 3: Cross multiply
    644,242.22x = 889,095.40 × 357,762.30
  4. Step 4: Simplify right side
    644,242.22x = 318,084,815,223.42
  5. Step 5: Solve for x
    x = 318,084,815,223.42/644,242.22
  6. Step 6: Final answer
    x = 493,734.82

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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.