Home / 678,631.08-1,018,118.93-314,155.45

Finding the Fourth Proportional to 678,631.08, 1,018,118.93 and 314,155.45

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Solution

The fourth proportional to 678,631.08, 1,018,118.93 and 314,155.45 is: 471,312.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,631.08 : 1,018,118.93 = 314,155.45 : x
  2. Step 2: Convert to fraction form
    678,631.08/1,018,118.93 = 314,155.45/x
  3. Step 3: Cross multiply
    678,631.08x = 1,018,118.93 × 314,155.45
  4. Step 4: Simplify right side
    678,631.08x = 319,847,610,309.54
  5. Step 5: Solve for x
    x = 319,847,610,309.54/678,631.08
  6. Step 6: Final answer
    x = 471,312.94

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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.