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Finding the Fourth Proportional to 760,816.20, 1,051,020 and 607,653.30

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Solution

The fourth proportional to 760,816.20, 1,051,020 and 607,653.30 is: 839,435.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,816.20 : 1,051,020 = 607,653.30 : x
  2. Step 2: Convert to fraction form
    760,816.20/1,051,020 = 607,653.30/x
  3. Step 3: Cross multiply
    760,816.20x = 1,051,020 × 607,653.30
  4. Step 4: Simplify right side
    760,816.20x = 638,655,771,366
  5. Step 5: Solve for x
    x = 638,655,771,366/760,816.20
  6. Step 6: Final answer
    x = 839,435.03

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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.