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Finding the Fourth Proportional to 612,369.80, 845,482.70 and 547,638.20

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Solution

The fourth proportional to 612,369.80, 845,482.70 and 547,638.20 is: 756,109.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,369.80 : 845,482.70 = 547,638.20 : x
  2. Step 2: Convert to fraction form
    612,369.80/845,482.70 = 547,638.20/x
  3. Step 3: Cross multiply
    612,369.80x = 845,482.70 × 547,638.20
  4. Step 4: Simplify right side
    612,369.80x = 463,018,621,220.95
  5. Step 5: Solve for x
    x = 463,018,621,220.95/612,369.80
  6. Step 6: Final answer
    x = 756,109.50

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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.