Home / 1,312,278.45-1,968,417.47-315,006.45

Finding the Fourth Proportional to 1,312,278.45, 1,968,417.47 and 315,006.45

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Solution

The fourth proportional to 1,312,278.45, 1,968,417.47 and 315,006.45 is: 472,509.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,278.45 : 1,968,417.47 = 315,006.45 : x
  2. Step 2: Convert to fraction form
    1,312,278.45/1,968,417.47 = 315,006.45/x
  3. Step 3: Cross multiply
    1,312,278.45x = 1,968,417.47 × 315,006.45
  4. Step 4: Simplify right side
    1,312,278.45x = 620,064,197,767.65
  5. Step 5: Solve for x
    x = 620,064,197,767.65/1,312,278.45
  6. Step 6: Final answer
    x = 472,509.62

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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.