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Finding the Fourth Proportional to 919,641.60, 1,378,641.60 and 358,545.60

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Solution

The fourth proportional to 919,641.60, 1,378,641.60 and 358,545.60 is: 537,498.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,641.60 : 1,378,641.60 = 358,545.60 : x
  2. Step 2: Convert to fraction form
    919,641.60/1,378,641.60 = 358,545.60/x
  3. Step 3: Cross multiply
    919,641.60x = 1,378,641.60 × 358,545.60
  4. Step 4: Simplify right side
    919,641.60x = 494,305,879,656.96
  5. Step 5: Solve for x
    x = 494,305,879,656.96/919,641.60
  6. Step 6: Final answer
    x = 537,498.39

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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.