Home / 745,607.40-1,028,949.94-406,075.38

Finding the Fourth Proportional to 745,607.40, 1,028,949.94 and 406,075.38

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Solution

The fourth proportional to 745,607.40, 1,028,949.94 and 406,075.38 is: 560,390.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,607.40 : 1,028,949.94 = 406,075.38 : x
  2. Step 2: Convert to fraction form
    745,607.40/1,028,949.94 = 406,075.38/x
  3. Step 3: Cross multiply
    745,607.40x = 1,028,949.94 × 406,075.38
  4. Step 4: Simplify right side
    745,607.40x = 417,831,237,886.48
  5. Step 5: Solve for x
    x = 417,831,237,886.48/745,607.40
  6. Step 6: Final answer
    x = 560,390.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.