Home / 738,730.80-1,108,096.20-289,302.30

Finding the Fourth Proportional to 738,730.80, 1,108,096.20 and 289,302.30

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Solution

The fourth proportional to 738,730.80, 1,108,096.20 and 289,302.30 is: 433,953.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,730.80 : 1,108,096.20 = 289,302.30 : x
  2. Step 2: Convert to fraction form
    738,730.80/1,108,096.20 = 289,302.30/x
  3. Step 3: Cross multiply
    738,730.80x = 1,108,096.20 × 289,302.30
  4. Step 4: Simplify right side
    738,730.80x = 320,574,779,281.26
  5. Step 5: Solve for x
    x = 320,574,779,281.26/738,730.80
  6. Step 6: Final answer
    x = 433,953.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.