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Finding the Fourth Proportional to 630,152.20, 943,478.70 and 612,656.20

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Solution

The fourth proportional to 630,152.20, 943,478.70 and 612,656.20 is: 917,283.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,152.20 : 943,478.70 = 612,656.20 : x
  2. Step 2: Convert to fraction form
    630,152.20/943,478.70 = 612,656.20/x
  3. Step 3: Cross multiply
    630,152.20x = 943,478.70 × 612,656.20
  4. Step 4: Simplify right side
    630,152.20x = 578,028,075,122.94
  5. Step 5: Solve for x
    x = 578,028,075,122.94/630,152.20
  6. Step 6: Final answer
    x = 917,283.28

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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.