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Finding the Fourth Proportional to 897,307.60, 1,345,499.70 and 266,139.40

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Solution

The fourth proportional to 897,307.60, 1,345,499.70 and 266,139.40 is: 399,072.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,307.60 : 1,345,499.70 = 266,139.40 : x
  2. Step 2: Convert to fraction form
    897,307.60/1,345,499.70 = 266,139.40/x
  3. Step 3: Cross multiply
    897,307.60x = 1,345,499.70 × 266,139.40
  4. Step 4: Simplify right side
    897,307.60x = 358,090,482,858.18
  5. Step 5: Solve for x
    x = 358,090,482,858.18/897,307.60
  6. Step 6: Final answer
    x = 399,072.16

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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.