Home / 645,459.48-890,681.16-373,547.28

Finding the Fourth Proportional to 645,459.48, 890,681.16 and 373,547.28

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Solution

The fourth proportional to 645,459.48, 890,681.16 and 373,547.28 is: 515,464.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,459.48 : 890,681.16 = 373,547.28 : x
  2. Step 2: Convert to fraction form
    645,459.48/890,681.16 = 373,547.28/x
  3. Step 3: Cross multiply
    645,459.48x = 890,681.16 × 373,547.28
  4. Step 4: Simplify right side
    645,459.48x = 332,711,524,665.25
  5. Step 5: Solve for x
    x = 332,711,524,665.25/645,459.48
  6. Step 6: Final answer
    x = 515,464.62

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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.