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Finding the Fourth Proportional to 470,490.80, 706,038.60 and 260,279.60

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Solution

The fourth proportional to 470,490.80, 706,038.60 and 260,279.60 is: 390,586.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,490.80 : 706,038.60 = 260,279.60 : x
  2. Step 2: Convert to fraction form
    470,490.80/706,038.60 = 260,279.60/x
  3. Step 3: Cross multiply
    470,490.80x = 706,038.60 × 260,279.60
  4. Step 4: Simplify right side
    470,490.80x = 183,767,444,392.56
  5. Step 5: Solve for x
    x = 183,767,444,392.56/470,490.80
  6. Step 6: Final answer
    x = 390,586.69

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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.