Home / 1,507,557-2,261,421.70-427,985.12

Finding the Fourth Proportional to 1,507,557, 2,261,421.70 and 427,985.12

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Solution

The fourth proportional to 1,507,557, 2,261,421.70 and 427,985.12 is: 642,002.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,507,557 : 2,261,421.70 = 427,985.12 : x
  2. Step 2: Convert to fraction form
    1,507,557/2,261,421.70 = 427,985.12/x
  3. Step 3: Cross multiply
    1,507,557x = 2,261,421.70 × 427,985.12
  4. Step 4: Simplify right side
    1,507,557x = 967,854,837,645.10
  5. Step 5: Solve for x
    x = 967,854,837,645.10/1,507,557
  6. Step 6: Final answer
    x = 642,002.15

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Double scale
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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.