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Finding the Fourth Proportional to 1,220,526, 1,830,789 and 472,572

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Solution

The fourth proportional to 1,220,526, 1,830,789 and 472,572 is: 708,858

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,526 : 1,830,789 = 472,572 : x
  2. Step 2: Convert to fraction form
    1,220,526/1,830,789 = 472,572/x
  3. Step 3: Cross multiply
    1,220,526x = 1,830,789 × 472,572
  4. Step 4: Simplify right side
    1,220,526x = 865,179,619,308
  5. Step 5: Solve for x
    x = 865,179,619,308/1,220,526
  6. Step 6: Final answer
    x = 708,858

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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.