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Finding the Fourth Proportional to 539,461.90, 808,501.65 and 480,018.70

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Solution

The fourth proportional to 539,461.90, 808,501.65 and 480,018.70 is: 719,413.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,461.90 : 808,501.65 = 480,018.70 : x
  2. Step 2: Convert to fraction form
    539,461.90/808,501.65 = 480,018.70/x
  3. Step 3: Cross multiply
    539,461.90x = 808,501.65 × 480,018.70
  4. Step 4: Simplify right side
    539,461.90x = 388,095,910,980.86
  5. Step 5: Solve for x
    x = 388,095,910,980.86/539,461.90
  6. Step 6: Final answer
    x = 719,413.01

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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.