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Finding the Fourth Proportional to 896,647.61, 1,237,336.47 and 488,740.48

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Solution

The fourth proportional to 896,647.61, 1,237,336.47 and 488,740.48 is: 674,441.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    896,647.61 : 1,237,336.47 = 488,740.48 : x
  2. Step 2: Convert to fraction form
    896,647.61/1,237,336.47 = 488,740.48/x
  3. Step 3: Cross multiply
    896,647.61x = 1,237,336.47 × 488,740.48
  4. Step 4: Simplify right side
    896,647.61x = 604,736,420,269.31
  5. Step 5: Solve for x
    x = 604,736,420,269.31/896,647.61
  6. Step 6: Final answer
    x = 674,441.57

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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.