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Finding the Fourth Proportional to 556,148.08, 767,482.32 and 311,133.40

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Solution

The fourth proportional to 556,148.08, 767,482.32 and 311,133.40 is: 429,362.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,148.08 : 767,482.32 = 311,133.40 : x
  2. Step 2: Convert to fraction form
    556,148.08/767,482.32 = 311,133.40/x
  3. Step 3: Cross multiply
    556,148.08x = 767,482.32 × 311,133.40
  4. Step 4: Simplify right side
    556,148.08x = 238,789,383,661.49
  5. Step 5: Solve for x
    x = 238,789,383,661.49/556,148.08
  6. Step 6: Final answer
    x = 429,362.96

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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.