Home / 913,417.56-1,260,518.40-505,547.28

Finding the Fourth Proportional to 913,417.56, 1,260,518.40 and 505,547.28

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Solution

The fourth proportional to 913,417.56, 1,260,518.40 and 505,547.28 is: 697,656.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,417.56 : 1,260,518.40 = 505,547.28 : x
  2. Step 2: Convert to fraction form
    913,417.56/1,260,518.40 = 505,547.28/x
  3. Step 3: Cross multiply
    913,417.56x = 1,260,518.40 × 505,547.28
  4. Step 4: Simplify right side
    913,417.56x = 637,251,648,509.95
  5. Step 5: Solve for x
    x = 637,251,648,509.95/913,417.56
  6. Step 6: Final answer
    x = 697,656.45

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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.