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Finding the Fourth Proportional to 612,075.40, 918,113.10 and 514,097.80

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Solution

The fourth proportional to 612,075.40, 918,113.10 and 514,097.80 is: 771,146.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,075.40 : 918,113.10 = 514,097.80 : x
  2. Step 2: Convert to fraction form
    612,075.40/918,113.10 = 514,097.80/x
  3. Step 3: Cross multiply
    612,075.40x = 918,113.10 × 514,097.80
  4. Step 4: Simplify right side
    612,075.40x = 471,999,924,861.18
  5. Step 5: Solve for x
    x = 471,999,924,861.18/612,075.40
  6. Step 6: Final answer
    x = 771,146.70

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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.