Home / 644,332.48-889,623.60-402,723.58

Finding the Fourth Proportional to 644,332.48, 889,623.60 and 402,723.58

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Solution

The fourth proportional to 644,332.48, 889,623.60 and 402,723.58 is: 556,036.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,332.48 : 889,623.60 = 402,723.58 : x
  2. Step 2: Convert to fraction form
    644,332.48/889,623.60 = 402,723.58/x
  3. Step 3: Cross multiply
    644,332.48x = 889,623.60 × 402,723.58
  4. Step 4: Simplify right side
    644,332.48x = 358,272,401,044.49
  5. Step 5: Solve for x
    x = 358,272,401,044.49/644,332.48
  6. Step 6: Final answer
    x = 556,036.54

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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.