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Finding the Fourth Proportional to 604,869.70, 907,304.55 and 289,941.70

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Solution

The fourth proportional to 604,869.70, 907,304.55 and 289,941.70 is: 434,912.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,869.70 : 907,304.55 = 289,941.70 : x
  2. Step 2: Convert to fraction form
    604,869.70/907,304.55 = 289,941.70/x
  3. Step 3: Cross multiply
    604,869.70x = 907,304.55 × 289,941.70
  4. Step 4: Simplify right side
    604,869.70x = 263,065,423,644.74
  5. Step 5: Solve for x
    x = 263,065,423,644.74/604,869.70
  6. Step 6: Final answer
    x = 434,912.55

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Half scale
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Double scale
Find fourth proportional to 604,870.70, 907,306.05 and 289,942.70
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.