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Finding the Fourth Proportional to 654,673.61, 903,314.10 and 382,688.91

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Solution

The fourth proportional to 654,673.61, 903,314.10 and 382,688.91 is: 528,031.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,673.61 : 903,314.10 = 382,688.91 : x
  2. Step 2: Convert to fraction form
    654,673.61/903,314.10 = 382,688.91/x
  3. Step 3: Cross multiply
    654,673.61x = 903,314.10 × 382,688.91
  4. Step 4: Simplify right side
    654,673.61x = 345,688,288,316.63
  5. Step 5: Solve for x
    x = 345,688,288,316.63/654,673.61
  6. Step 6: Final answer
    x = 528,031.50

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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.