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Finding the Fourth Proportional to 554,703.12, 765,490.58 and 300,054.30

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Solution

The fourth proportional to 554,703.12, 765,490.58 and 300,054.30 is: 414,075.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,703.12 : 765,490.58 = 300,054.30 : x
  2. Step 2: Convert to fraction form
    554,703.12/765,490.58 = 300,054.30/x
  3. Step 3: Cross multiply
    554,703.12x = 765,490.58 × 300,054.30
  4. Step 4: Simplify right side
    554,703.12x = 229,688,740,138.49
  5. Step 5: Solve for x
    x = 229,688,740,138.49/554,703.12
  6. Step 6: Final answer
    x = 414,075.08

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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.