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Finding the Fourth Proportional to 459,591.40, 689,948.70 and 260,050.60

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Solution

The fourth proportional to 459,591.40, 689,948.70 and 260,050.60 is: 390,393.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,591.40 : 689,948.70 = 260,050.60 : x
  2. Step 2: Convert to fraction form
    459,591.40/689,948.70 = 260,050.60/x
  3. Step 3: Cross multiply
    459,591.40x = 689,948.70 × 260,050.60
  4. Step 4: Simplify right side
    459,591.40x = 179,421,573,404.22
  5. Step 5: Solve for x
    x = 179,421,573,404.22/459,591.40
  6. Step 6: Final answer
    x = 390,393.67

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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.