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Finding the Fourth Proportional to 478,284.19, 660,018.67 and 260,487.93

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Solution

The fourth proportional to 478,284.19, 660,018.67 and 260,487.93 is: 359,465.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,284.19 : 660,018.67 = 260,487.93 : x
  2. Step 2: Convert to fraction form
    478,284.19/660,018.67 = 260,487.93/x
  3. Step 3: Cross multiply
    478,284.19x = 660,018.67 × 260,487.93
  4. Step 4: Simplify right side
    478,284.19x = 171,926,897,109.65
  5. Step 5: Solve for x
    x = 171,926,897,109.65/478,284.19
  6. Step 6: Final answer
    x = 359,465.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.