Home / 643,075.20-964,068.48-243,495.72

Finding the Fourth Proportional to 643,075.20, 964,068.48 and 243,495.72

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Solution

The fourth proportional to 643,075.20, 964,068.48 and 243,495.72 is: 365,037.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,075.20 : 964,068.48 = 243,495.72 : x
  2. Step 2: Convert to fraction form
    643,075.20/964,068.48 = 243,495.72/x
  3. Step 3: Cross multiply
    643,075.20x = 964,068.48 × 243,495.72
  4. Step 4: Simplify right side
    643,075.20x = 234,746,548,666.91
  5. Step 5: Solve for x
    x = 234,746,548,666.91/643,075.20
  6. Step 6: Final answer
    x = 365,037.48

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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.