Home / 809,816.95-1,117,547.39-470,307.07

Finding the Fourth Proportional to 809,816.95, 1,117,547.39 and 470,307.07

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Solution

The fourth proportional to 809,816.95, 1,117,547.39 and 470,307.07 is: 649,023.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,816.95 : 1,117,547.39 = 470,307.07 : x
  2. Step 2: Convert to fraction form
    809,816.95/1,117,547.39 = 470,307.07/x
  3. Step 3: Cross multiply
    809,816.95x = 1,117,547.39 × 470,307.07
  4. Step 4: Simplify right side
    809,816.95x = 525,590,430,637.78
  5. Step 5: Solve for x
    x = 525,590,430,637.78/809,816.95
  6. Step 6: Final answer
    x = 649,023.75

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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.