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Finding the Fourth Proportional to 578,651.34, 798,511.10 and 320,510.88

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Solution

The fourth proportional to 578,651.34, 798,511.10 and 320,510.88 is: 442,289.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,651.34 : 798,511.10 = 320,510.88 : x
  2. Step 2: Convert to fraction form
    578,651.34/798,511.10 = 320,510.88/x
  3. Step 3: Cross multiply
    578,651.34x = 798,511.10 × 320,510.88
  4. Step 4: Simplify right side
    578,651.34x = 255,931,495,350.77
  5. Step 5: Solve for x
    x = 255,931,495,350.77/578,651.34
  6. Step 6: Final answer
    x = 442,289.64

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Double scale
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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.